An interventional study of Hydrogen Peroxide 35% and Hydrogen Peroxide 35% + Polishing whitened teeth in Tooth Discoloration, Morphologic Change and Tooth Sensitivity, sponsored by Universidade Federal do Para. Completed at 1 site in Brazil. Open to participants aged 18 Years to 30 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-12-02.
Sponsored by Universidade Federal do Para · Not applicable, Interventional, and Prevention
This trial evaluated the influence of polishing on enamel color change after in-office bleaching treatment. It also evaluated the influence of polishing on tooth morphology and sensitivity.
282 studies on the registry are indexed under Dentin Sensitivity; 45 are open to participants now.
This study's enrollment of 50 is below the median of 60 across 273 interventional studies indexed under Dentin Sensitivity.
Browse Dentin Sensitivity studies →Universidade Federal do Para is the lead sponsor of 29 studies on the registry; 4 are open to participants now.
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Exclusion Criteria:
In-office whitening treatment with 35% Hydrogen Peroxide
Other: Hydrogen Peroxide 35%
In-office whitening treatment with 35% Hydrogen Peroxide + Polishing of whitened teeth
Other: Hydrogen Peroxide 35% + Polishing whitened teeth
Group that received only bleaching treatment. Soft tissue protection was performed with a Top Dam light-curing gingival barrier (FGM, Santa Catarina, SC, Brazil). Application of whitening gel (Whitness HP 35%/FGM) on the buccal surface from premolar to premolar in the upper and lower arches. Three 45-minute sessions were held with an interval of seven days between them.
Group that received only bleaching treatment followed by polishing. Soft tissue protection was performed with a Top Dam light-curing gingival barrier (FGM, Santa Catarina, SC, Brazil). Application of whitening gel (Whitness HP 35%/FGM) on the buccal surface from premolar to premolar in the upper and lower arches. Three 45-minute sessions were held with an interval of seven days between them. After bleaching, the vestibular surfaces were polished for 20s on each bleached tooth, with polishing paste and felt disc (Diamond Flex, FGM, Santa Catarina, SC, Brazil) in low rotation.
Influence of polishing on color after tooth whitening
Color evaluation was performed with the EasyshadeAdvanced spectrophotometer (Vita-Zahnfabrik, GE, Germany)
Time frame: 14 days
Surface morphology of whitening enamel with and without polishing
The images were obtained using a electron microscope (Mira3 model) with type electron gun, mounted on supports of aluminum with 12mm of diameter, using tape double adhesive carbon face, and metallic with Au for 2'30'' which deposits about the sample a film thick average of 10 to 15nm. The images were generated by detecting secondary electrons, using a voltage acceleration of 5 kV and a working distance of around 15 mm.
Time frame: 14 days
Influence of polishing on sensitivity after tooth whitening
assessment of sensitivity during treatment using a visual analogue scale with values from 0 to 10, with higher values indicating a worse level of pain.
Time frame: 14 days
This study is completed, as verified in Nov 2022. You cannot join it, but the record below documents what was studied.
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Universidade Federal do Para